Direct-Bandgap Germanium Active Layers Pumped Above Transparency Based on Tensilely Strained Nanomembranes

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Boztuğ Yerci Ç. H., Chen F., Sanchez-Perez J. R., Sudradjat F. F., Paskiewicz D. M., Jacobson R. B., ...More

Conference on Lasers and Electro-Optics (CLEO), Maryland, United States Of America, 1 - 06 May 2011, (Full Text)

• Publication Type: Conference Paper / Full Text
• City: Maryland
• Country: United States Of America
• TED University Affiliated: No

Abstract

We show that mechanically stressed nanomembranes can be used to introduce sufficient tensile strain in Ge to transform it into a direct-bandgap, efficient light-emitting material that can support population inversion and thus provide optical gain. (C) 2011 Optical Society of America